Patents by Inventor Mark E. Schmid

Mark E. Schmid has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for bus arbitration using a pseudo-random sequence
    Patent number: 4667192
    Abstract: The present invention discloses a second level bus arbitration method and apparatus for use with a distributed computer network. The invention alleviates any simultaneous access possibility by requiring any computing element which claims access to the bus to first send a pseudo-random sequence over a common line using open collector logic. A computing element can access the bus if the sequence appearing on the common line is the sequence it transmitted. The invented arbitration system does not require central control or centralized clocking.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: May 19, 1987
    Assignee: The Johns Hopkins University
    Inventors: Mark E. Schmid, Robert L. Trapp, Alexander E. Davidoff